Search Open Library for books — strong for modern editions and translations as metadata,
AI agents call search_openlibrary to retrieve information from Philosophy without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a public, open-access library database (Open Library) to retrieve bibliographic information. It has no side effects, cannot modify data, execute code, or affect financial systems. The blast radius of misuse is minimal — worst case an agent generates many search queries or returns irrelevant results. This is a straightforward read operation.
From the tool's definition Tool name 'search_openlibrary' and description indicate it searches a public library database for books and metadata. No modification, deletion, execution, or financial operations are performed. Returns metadata about editions and translations.
Attacks that exploit this kind of access
Search Open Library for books — strong for modern editions and translations as metadata,. It is categorised as a Read tool in the Philosophy MCP Server, which means it retrieves data without modifying state.
Register the Philosophy MCP server in PolicyLayer and add a rule for search_openlibrary: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Philosophy. Nothing to install.
search_openlibrary is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the search_openlibrary rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for search_openlibrary. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
search_openlibrary is provided by the Philosophy MCP server (sea9401/philosophy-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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